Numerical Integration Using Trapezoidal Method Pseudocode

In article Numerical Integration Using Trapezoidal Method Algorithm, we discussed about an algorithm of Trapezoidal Method for evaluating definite integral.

Now we're going to implement pseudocode for this method so that it will be easy while implementing using programming language.

Trapezoidal Method Pseudocode

1. Start


2. Define Function f(x)


3. Input lower_limt, upper_limit, sub_interval


4. Calculate: step_size = (lower_limit - upper_limit)/sub_interval


5. Calculate: integration = f(lower_limit) + f(upper_limit)  


6. Set: i=1


7. Loop 
        
        k= lower_limit + i * step_size 
        integration =  integration + 2*f(k)
        i = i+1
        
   While i<= sub_interval


8. integration = integration * step_size/2


9. Print intgertaion as result


10. Stop

Recommended Readings

  1. Numerical Integration Trapezoidal Method Algorithm
  2. Numerical Integration Using Trapezoidal Method Pseudocode
  3. Numerical Integration Using Trapezoidal Method C Program
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